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  #1  
Old 03-08-2020, 09:29 AM
Stockmanreef Stockmanreef is offline
 
Join Date: Nov 2012
Location: Midland, mi
Posts: 914
Default IO390 Dip Stick tube issue

I figured I would put this out there. I could not get the dip stick tube in place--this is the tube that attaches to the engine. It kept cross threading and I could not get it to tighten by hand. I tried to fix it, but i could not get it to thread in.

I emailed Jeff at Lycoming and they painted and sent me a new one. This one threaded in by hand with absolutely no issues.

The point is that if you have a bad one, then Lycoming will replace it with a good one.

cheers
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Ken Stockman
Midland, MI
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FaceBook Page: Ken's RV-14
RV-14a (serial number 140073)
N73XP (at least that # reserved now)

Working on the baffles and exhaust
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  #2  
Old 03-08-2020, 12:32 PM
bjdecker's Avatar
bjdecker bjdecker is offline
 
Join Date: Jun 2005
Location: Georgetown, TX
Posts: 238
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While you're at it - upgrade the washer to the neoprene version; Spruce has 'em but I think you can find them cheaper.

https://www.aircraftspruce.com/catal...lickkey=259543

The paper washer is only good for a single use -- then it will begin to leak, and you will chase the "Mystery Drip" for weeks/months

Cheers!

B
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Brian Decker
Retired Firmware Guy and Airplane Builder

2018 RV-7 QB -- Built, Flying
2007 RV-7 QB -- Built, Drowned, Resurrected and flying
1998 RV-8 QB -- Started, Sold
1986 Mooney 205SE
1980 Mooney 231

Aided and abetted building a number of other RV's.
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  #3  
Old 03-08-2020, 01:21 PM
Ron B. Ron B. is offline
 
Join Date: Nov 2007
Location: Yarmouth, Nova Scotia
Posts: 2,342
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And after you install it safety wire it in both directions so it doesn't move in either direction when you tighten or loosen the dip stick. Really helped stop the leaks when someone suggested I do this.
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  #4  
Old 03-08-2020, 04:38 PM
Stockmanreef Stockmanreef is offline
 
Join Date: Nov 2012
Location: Midland, mi
Posts: 914
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Ron B--

so I guess you have to drill a couple of holes in the tabs at the base of the dip stick tube to install the safety wires?

thanks for the tip

ken
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Ken Stockman
Midland, MI
EAA Chapter 1093 member

FaceBook Page: Ken's RV-14
RV-14a (serial number 140073)
N73XP (at least that # reserved now)

Working on the baffles and exhaust
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  #5  
Old 03-09-2020, 04:50 AM
Ron B. Ron B. is offline
 
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Location: Yarmouth, Nova Scotia
Posts: 2,342
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Mine had two tabs.
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  #6  
Old 03-09-2020, 03:36 PM
Tom023 Tom023 is offline
 
Join Date: Jul 2011
Location: Cypress, TX
Posts: 346
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I had the same problem with installing the tube. It took me four hours and some delicate file work to clean up the plastic threads I damaged. I dreaded taking it back off to seal the baffles but no issues. I seriously thought about buying the aluminum one.
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  #7  
Old 03-09-2020, 05:46 PM
Tailwind/RVGuy Tailwind/RVGuy is offline
 
Join Date: Dec 2018
Location: Holmen
Posts: 31
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+1 on safety wiring it both directions.
Keith
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Finished Wittman Tailwind in 2016
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lurking for years but now paid
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  #8  
Old 03-09-2020, 06:20 PM
Stockmanreef Stockmanreef is offline
 
Join Date: Nov 2012
Location: Midland, mi
Posts: 914
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Tom-

I would just email Lycoming and they might send a new one for free. I don't think that I damaged mine. I was super careful and it would just not thread on. After a few tries, I did mess up the threads and it was all downhill from there.

I think that it just how some of them are cut at the bottom
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Ken Stockman
Midland, MI
EAA Chapter 1093 member

FaceBook Page: Ken's RV-14
RV-14a (serial number 140073)
N73XP (at least that # reserved now)

Working on the baffles and exhaust
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